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JAMIA MILLIA ISLAMIA Jamia Millia Islamia Solved Paper-2008

  • question_answer
        The atomic number of Ni and Cu are 28 and 29 respectively. The electronic configuration. \[1{{s}^{2}}\text{ }2{{s}^{2}}\text{ }2{{p}^{6}}\text{ }3{{s}^{2}}\text{ }3{{p}^{6}}\text{ }3{{d}^{10}}\]represents

    A)  \[C{{u}^{+}}\]                                  

    B)  \[C{{u}^{2+}}\]

    C)  \[N{{i}^{2+}}\]                                 

    D)  \[Ni\]

    Correct Answer: A

    Solution :

                    Electronic configuration of \[_{28}Ni=1{{s}^{2}},2{{s}^{2}}2{{p}^{6}},3{{s}^{2}}3{{p}^{6}}3{{d}^{8}},4{{s}^{2}}\] \[N{{i}^{2+}}=1{{s}^{2}},2{{s}^{2}}2{{p}^{6}},3{{s}^{2}}3{{p}^{6}}3{{d}^{8}},4{{s}^{0}}\] \[_{29}Cu=1{{s}^{2}},2{{s}^{2}}2{{p}^{6}},3{{s}^{2}}3{{p}^{6}}3{{d}^{8}},4{{s}^{1}}\] \[C{{u}^{+}}=1{{s}^{2}},2{{s}^{2}}2{{p}^{6}},3{{s}^{2}}3{{p}^{6}}3{{d}^{10}},4{{s}^{0}}\] So, the given configuration is of\[C{{u}^{+}}\]


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